OPTIFUEL Optimix Race Fuel 16% Nitro 5LBESTIL MANDAG MORGEN KL 8: 00 OG F DET TIL WEEKENDEN. OPTIMIX RACE Fuel 16% Nitro 5L OPTIMIX RACE 16 is supplied as a 5L container and has 16% nitromethane (by weight) with 10% fully synthetic oil from KLOTZ. The Race Fuel has been developed with the assistance of top pro drivers and is a high performance fuel for RACE use it's not meant for general fun RTR buggies and trucks etc. For RTR use (and RTR boats) Choose Optimix RTR 16% fuel instead